Buffing wheel



Jan. 14, 1936. E. w. HALL BUFFING WHEEL Filed Aug. 9, 1935 4 ATtys.

Patented Jan. 14, 1936 UNITED STATES PATENT OFFICE BUFFING WHEEL Elisha Winthrop Hall, Scituate, Mass. Application August 9, 1935, Serial No. 35,4199

I 13 Claims. This invention relates to improvements in buding wheels which comprises a plurality of contacting layers of buffing material, such as cloth, or other fibrous material, and one of the objects of the invention is to provide a bufi'ing wheel in which the fraying of the buffing material will be effectively avoided.-

In usual buffing wheel constructions the plurality of layers of fabric, or other buffing material, are united by lines of through and through stitching which in some instances are arranged concentrically, and others spirally, and others in parallelism in various designs and in intersecting lines or rows. In all such constructions the wearing down of the bufiingwheel exposes the section of the thread which extends through the buffing wheel and frequently a portion of the thread uniting the layers is broken in such manner that the released portion is projected out by centrifugal force and whips around during the rotation of the bufling wheel in such a manner as to produce abrasions or scratches upon the surface being buffed.

By the present invention the adjacent layers of the buffing material are united by a suitable tenacious adhesive at predetermined intervals and. when the bulhng wheel is worn down to the point or lines of adhesion the adhesive material is merely worn away without producing any such frayed ends as result from the wearing away of the stitching thread as above described.

In usual bufiing wheels in which the layers of bumng material are secured together by lines of through and through stitching the wearing away of a through and through stitch releases all of the layers outside of the next inner through and through stitch.

Another object of the invention is to providemeans which will adhesively unite successive adjacent layers in an offset or staggered arrangement out of registry with each other, thereby avoiding the release of the layers throughout any substantial segment of the buffing wheel, thus.

insuring more uniformity of action of the buffing wheel.

A further object of the invention is to provide a bumng wheel of the character specified in which the adjacent layers are united by intersecting narrow lines of tenacious adhesive so distributed over the working area thereof as to form circular series of pockets, to retain the polishing or abrading material, which will successively open to the periphery of the wheel as it wears away.

A further object of the invention is to provide a bufiing wheel in which the adjacent layers are united by intersecting series of preferably parallel lines of stitching so distributed over the working area as to form pockets successively opening to the periphery of the wheel as it wears away and in which the respective intersecting lines of ad- 5 hesive uniting two adjacent layers are so positioned relatively to the series of intersecting lines of adhesiveuniting the next adjacent layer that the pockets between successive adjacent layers are in whole or in part in non-registering or staggered relation relatively to each other, so that the polishing or abrading material contained in the pockets will be more uniformly presented to the work and a greater uniformity of abrading or polishing action obtained.

These and other objects and features of the invention will more fully appear from the following description and the accompanying drawing and will be particularly pointed out in the claims. 20

. Illustrative embodiments of the invention are shown in the accompanying drawing, in which,

Fig. 1 is an elevation of a bufling wheel in which the adjacent layers of buffing material are secured together by intersecting series of parallel narrow lines of adhesive, the relative positions ofthe lines of adhesive of one pair of adjacent layers being in angular relation to the lines of adhesive uniting the next adjacent layer to the pair thus united; 30

Fig. 2 is an illustration of a buffing wheel showing the adjacent layers united by parallel sinuous lines of adhesive;

Fig. 3 is a view showing adjacent layers of buffing material united by curved lines of adhesive diverging from each other from the central portion of the wheel to the periphery thereof; and,

Fig. 4 is a view showing a bufling wheel in which adjacent layers of bufiing material are united by suitably spaced radial narrow lines of an adhesive, the lines of adhesive uniting adjacent layers being offset from the lines of adhesive uniting the next layer thereto.

The bufiing wheel embodying the present invention comprises broadly a plurality of contacting layers of fibrous bufiing material firmly united at predetermined spaced intervals by a tenacious adhesive, such as latex, a latex composition, glue, or other suitable adhesive material. The adhesive, particularly if animal glue, 50

per cent of zinc oxide is satisfactory for this purpose.

The adhesive may be so distributed as to unite adjacent layers of bufllng material in any desired manner. In a preferred construction illustrated in Fig. 1 the outer layer I of bufllng material, such as cloth, is united to the next adjacent layer 2 by a series of parallel narrow lines of adhesive 3, and also by an intersecting series of parallel narrow lines I of adhesive. In this construction the respect series of parallel lines of adhesive are arranged at right angles to each other, but of course may be positioned in any desired angular relation to each other. The next adjacent layer 5 of bufling material is united to the layer 2 by similar series of parallel lines of adhesive 6 and 1 in which the series of parallel lines of adhesive are disposed in angular relation to the other.

By reason of this construction a series of peripheral pockets 8 toreceive and contain the polishing or abrading material are provided between the layers l and 2, and another series of peripheral pockets 9 are provided between the layers 2 and 5, the pockets 8 and 9 being arranged in offset or staggered relation to each other. Any number of adjacent layers of buiiing material may be similarly united by intersecting parallel narrow lines of adhesive to provide a bufling wheel of the desired thickness.

By reason of this construction the wearing away of the wheels will progressively wear away the narrow lines of adhesive at the periphery, but inasmuch as the pockets 8 and 9 are in staggered relation to each other no substantial segments of any of the layers of the bufiing material will be released from the adjacent layer, so that the action of the bufling wheel will be uniform.

In the construction illustrated in Fig. 1 a series of open pockets at the periphery of the wheel surround closed pockets l and l l which are successively opened to the periphery as the wheel wears away. These closed pockets when opened by the wearing away of the wheel receive the polishing or abrading material so that uniform polishing or abrading action will continue until the wheel is worn down to such diameter that it is no longer eflicient.

Where layers of cloth are employed as bufiing material the layers are so arranged that the warp and woof l2 of one layer is disposed in angular I relation to the warp and woof [3 of the next adjacent layer, thereby avoiding soft spots in the periphery of the wheel which will occur if the warp and woof of adjacent lay rs are respectively in parallelism.

A modified form. of bufling wheel is illustrated in Fig. 2 in which the adjacent layers of buffing material are united by non-intersecting sinuous parallel rows of adhesive I4 having curved end portions I extending in similar angular relation to radii from their points of intersection with the periphery of the wheel, thereby reenforcing the peripheral zone of the wheel when it is rotated in one directiona clockwise direction as shown in Fig. 2--and causing the same to present a hard work engaging surface, and when the wheel is rotated in a reverse direction presenting a relatively softer work engaging surface. I

In this construction, as in that illustrated in Fig. 1, the series of parallel lines of adhesive uniting successive adjacent layers may be arranged at right angles to each other, or in any other desired angular relation to each other.

Another form of bufiing wheel embodying the invention is illustrated in Fig. 3 in which successive layers are united by curved narrow lines of adhesive 16 extending from the center to the periphery of the wheel and diverging from each other from the center to the periphery. The lines of adhesive uniting adjacent layers may be so 5 constructed as to register either with each other or to be in offset or intermediate relation to each other.

Another embodiment of the invention is illustrated in Fig. 4 in which radial lines of adhesive 10 ll unite one pair of adjacent layers and intermediate radial lines of adhesive l8 unite the next adjacent layer thereto and so on throughout the thickness of the wheel.

Various other arrangements of lines of adhesive uniting adjacent layers to each other may be employed, as will be readily understood by those skilled in the art. The width of the lines of adhesive, which unite the layers, relatively to the spaces therebetween may be in any desired proportion dependent upon the desired flexibility or rigidity of the buffing wheel. It will thus be seen that a bufiing wheel embodying the invention may be so constructed as to be adapted to any kind of work.

Bufiing wheels embodying the invention present a more uniform bufling periphery throughout the life of the wheel than those in which the layers of bufling material are stitched together. Objectionable fraying of the wheel is avoided. The bufiing material contained in the peripheral pockets of bufiing wheels, such as illustrated in Fig. 1, is more evenly distributed than is possible in the through and through stitched bufilng wheel, and the efliciency of the wheel therefore is greatly increased.

It will be understood that the particular embodiments of the invention shown and described herein are of an illustrative character and that various changes in form, construction and arrangement of parts may be made within the spirit and scope of the following claims.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is:

1. A bufiing wheel comprising a plurality of contacting layers of fibrous bufllng material firmly united at predetermined spaced intervals by a tenacious adhesive.

2. A bufling wheel comprisinga plurality of contacting layers of fibrous bufling material, the adjacent layers of which are firmly united by spaced-apart lines of tenacious adhesive.

3. A buffing wheel comprising a plurality of contacting layers of cloth, the adjacent layers of which are united by narrow lines of tenacious adhesive, the lines of adhesive uniting successive adjacent layers extending in diverging directions.

4. A buffing wheel comprising a plurality of 00 contacting layers of cloth, the adjacent layers of which are united by lines of tenacious adhesive, the lines of adhesive uniting successive adjacent layers being out of registry with one another.

5. A bufling wheel comprising a plurality of a5 contacting layers of cloth, the adjacent layers of which are united by parallel narrow lines of tenacious adhesive.

6. A buffing wheel comprising a plurality of contacting layers of cloth, the adjacent layers of which are united by parallel sinuous narrow lines of adhesive extending entirely across the wheel, the greater majority of said lines of adhesive having curved end portions extending in similar angular relation to radii from their points of intersection with the periphery of the wheel, thereby reenforcing the peripheral zone of the wheel when it is rotated in one direction and causing the same to present a relatively hard working surface and when the wheel is rotated in the reverse direction to present a softer workengaging surface.

7. A bufling wheel comprising a plurality of contacting layers of fibrous material, the adjacent layers of which are united by intersecting narrow. lines of tenacious adhesive so distributed over the working area. thereof as to form circular series of pockets successively opening to the periphery as the wheel wears away.

8. A bumng wheel comprising a plurality of contacting layers of'cloth, the adjacent layers of which are united by series of parallel narrow lines of tenacious adhesive so distributed over the working area thereof as to form peripheral open pockets surrounding closed pockets which successively open to the periphery as the wheel wears away.

9. Abuffing wheel comprising a plurality of contacting layers of cloth so arranged that the warp and woof of one layer extend in difierent directions to the warp and woof of the adjacent layer, the adjacent layers being united by parallel'narrow lines of tenacious adhesive spaced apart at intervals relatively wider than the lines of adhesive.

10. A bufling wheel comprising a plurality of contacting layers of cloth so arranged that the warp and woof of one layer extend in different directions to the warp and woof of the adjacent layer, the adjacent layers being united by a plurality of series of parallel lines of adhesive uniformly spaced apart, each series of lines of adhesive intersecting those of another series to form pockets successively opening to the periphery as the wheel wears away. 5 11. A bufiing wheel comprising a plurality of contacting layers of cloth, the adjacent layers of which are united by intersecting narrow lines of tenacious adhesive so distributed over the working area thereof as to form pockets successively opening to the periphery as the wheel wears away, the intersecting lines of adhesive uniting two adjacent layers being so positioned relatively to the lines of adhesive uniting the next adjacent layer thereto that the pockets between adjacent layers are in staggered relation to each other.

12. A bufiing wheel comprising a plurality of contacting layers of cloth, the adjacent layers of which are united by intersecting series of parallel narrow lines of tenacious adhesive so distributed over the Working area thereof as to form pockets successively opening to the periphery as the wheel wears away, the respective intersecting lines of adhesive uniting two adjacent layers being so positioned relatively to the respective series of parallel intersecting lines of adhesive uniting the next adjacent layer thereto that the pockets between successive adjacent layers are in staggered relation to each other.

13. A butting wheel comprising a plurality of contacting layers of fibrous buffing material, the adjacent layers of which are firmly united by spaced-apart narrow lines of latex composition.

ELISHA WINTHROP HALL. 

